H. Abdul Razzak, Faris, and Sadallah T. Sulaiman. “Differential- Pulse Polarographic Determination of Doxycycline in Serum and Urine”. Rafidain Journal of Science 19, no. 1 (February 1, 2008): 52–58. Accessed September 28, 2025. https://jamh.uomosul.edu.iq/index.php/rsci/article/view/47522.